Cleansing agent

Abstract

To provide a cleanser that gives highly resilient bubbles, which last for a long time.SOLUTION: A cleanser contains (A) N-acylglycine-based anionic surfactant and (B) nonionic surfactant with an HLB of 15 or more. The (B) nonionic surfactant with an HLB of 15 or more is at least one selected from the group consisting of polyoxyethylene glycerol fatty acid ester and polyoxyethylene sorbitan fatty acid ester.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a cleanser, and more particularly to a cleanser for use in a pump foamer. [Background technology]

[0002] Conventionally, anionic surfactants used in cleansers have been mainly composed of higher fatty acid salts, alkyl sulfates, and alkyl ether sulfates, which are expected to have high cleansing power. However, these cleansers have the problem of skin irritation. Therefore, amino acid-based surfactants have been used to reduce the skin irritation of anionic surfactants. However, although amino acid-based surfactants are less irritating, they have problems such as poor foaming ability, foam stability, and foam volume, as well as low viscosity.

[0003] For example, a detergent composition containing an N-acylaspartic acid-based anionic surfactant or an N-acylglutamic acid-based anionic surfactant as an amino acid-based surfactant has been proposed as a detergent composition with improved foaming and thickening properties (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-74905 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the cleanser containing an N-acylglutamic acid-based anionic surfactant described in Patent Document 1 did not provide satisfactory foam elasticity and foam durability when discharged from a pump-former container. Therefore, an object of the present invention is to provide a cleanser that has excellent foam elasticity and foam durability.

[0006] As a result of extensive research into solving the above problems, the inventors discovered that the above problems can be solved by combining an N-acylglycine-based anionic surfactant with a specific nonionic surfactant with an HLB of 15 or higher in a cleanser, and thus completed the present invention. [Means for solving the problem]

[0007] According to the present invention, the following inventions are provided. [1] (A) N-acylglycine-based anionic surfactant, and (B) a nonionic surfactant with an HLB of 15 or more; Including, A cleansing agent, wherein the (B) nonionic surfactant having an HLB of 15 or more is at least one selected from the group consisting of polyoxyethylene glycerin fatty acid esters and polyoxyethylene sorbitan fatty acid esters. [2] The cleanser according to [1], wherein the (B) nonionic surfactant with an HLB of 15 or higher is at least one selected from the group consisting of PEG-60 glyceryl isostearate, PEG-90 glyceryl isostearate, and PEG-80 sorbitan laurate. [3] The cleanser according to [1] or [2], wherein the content of the component (A) is 1% by mass or more and 20% by mass or less relative to the total amount of the cleanser. [4] The cleanser according to any one of [1] to [3], wherein the content of the component (B) is 0.1% by mass or more and 15% by mass or less, based on the total amount of the cleanser. [5] A cleanser according to any one of [1] to [4], further comprising (C) a polyhydric alcohol of IOB5 or higher. [6] The cleanser according to [5], wherein the content of the component (C) is 10% by mass or more and 60% by mass or less, based on the total amount of the cleanser. [7] The cleanser according to any one of [1] to [6], further comprising (D) a hydrophobically modified polyether urethane. [8] The cleanser according to any one of [1] to [7], further comprising (E) an inorganic salt. [9] The cleanser according to any one of [1] to [8], further comprising (F) an amphoteric surfactant.

[10] The cleanser according to any one of [1] to [9], which is for use with a pump former. [Effects of the Invention]

[0008] According to the present invention, a cleanser having excellent foam elasticity and foam durability is provided. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Cleaning agent] The cleanser according to the present invention contains, as essential ingredients, (A) an N-acylglycine-based anionic surfactant and (B) a nonionic surfactant with an HLB of 15 or higher. Furthermore, depending on the intended purpose, the cleanser may contain (C) a polyhydric alcohol with an IOB of 5 or higher, (D) a hydrophobically modified polyether urethane, (E) an inorganic salt, (F) an amphoteric surfactant, water, and other ingredients. The cleanser exhibits excellent foam elasticity and foam persistence, making it suitable for use as a cleanser for pump foamers. Each component of the cleanser is described in detail below.

[0010] ((A) Anionic Surfactant) An N-acylglycine-based anionic surfactant is used as the anionic surfactant. By using an N-acylglycine-based anionic surfactant instead of an N-acylglutamic acid-based anionic surfactant as the anionic surfactant, the elasticity and persistence of the foam obtained by discharging the cleanser from the pump foamer container can be improved.

[0011] The acyl group constituting the N-acylglycine anionic surfactant can be selected from fatty acids having 8 to 22 carbon atoms. Examples of fatty acids having 8 to 22 carbon atoms include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, isostearic acid, oleic acid, linoleic acid, arachidic acid, and behenic acid.

[0012] Suitable N-acylglycine-based anionic surfactants include, for example, N-coconut oil fatty acid acylglycine, N-coconut oil fatty acid acylglycine, N-palm kernel oil fatty acid acylglycine, and salts thereof. Examples of the salts include alkali metal salts and alkanolamine salts. Examples of the alkali metal salts include sodium salts and potassium salts, and examples of the alkanolamine salts include monoethanolamine salts and triethanolamine salts. These N-acylglycine-based anionic surfactants may be used alone or in combination of two or more.

[0013] The content of the N-acylglycine anionic surfactant is preferably 1% by mass to 20% by mass, more preferably 1.5% by mass to 17% by mass, and even more preferably 2% by mass to 15% by mass, based on the total amount of the cleanser. When the content of the anionic surfactant is within the above range, foam elasticity and foam durability can be improved.

[0014] ((B) Nonionic surfactant) The nonionic surfactant used has an HLB of 15 or more. The HLB of the nonionic surfactant is preferably 15.5 or more and 19.5 or less, and more preferably 16 or more and 19 or less. HLB (Hydrophilic-Lypophilic Balance) is an index showing the balance between hydrophilicity and lipophilicity. In the present invention, the value calculated using the following formula by the Griffin method is used as the HLB. HLB = 20 x (saponification value of 1-ester / acid value of fatty acid)

[0015] The nonionic surfactant with an HLB of 15 or higher is at least one selected from the group consisting of polyoxyethylene glycerin fatty acid esters and polyoxyethylene sorbitan fatty acid esters. By using a polyoxyethylene glycerin fatty acid ester and / or a polyoxyethylene sorbitan fatty acid ester with an HLB of 15 or higher as the nonionic surfactant rather than a nonionic surfactant with an HLB of less than 15 (particularly HLB 14 or lower), the elasticity and persistence of the foam obtained by discharging the cleanser from the pump foamer container can be improved.

[0016] The number of carbon atoms in the fatty acids constituting the polyoxyethylene glycerin fatty acid esters and polyoxyethylene sorbitan fatty acid esters having an HLB of 15 or higher is preferably 10 or more and 20 or less, more preferably 12 or more and 18 or less. Examples of fatty acids having 12 to 18 carbon atoms include lauric acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, isostearic acid, oleic acid, and linoleic acid. These nonionic surfactants having an HLB of 15 or higher may be used alone or in combination of two or more.

[0017] The content of the nonionic surfactant with an HLB of 15 or higher is preferably 0.1% by mass to 15% by mass, more preferably 0.2% by mass to 12% by mass, and even more preferably 0.5% by mass to 10% by mass, based on the total amount of the cleanser. If the content of the nonionic surfactant with an HLB of 15 or higher falls within the above range, foam elasticity and foam durability can be improved.

[0018] ((C) Polyhydric alcohol) As the polyhydric alcohol, it is preferable to use a polyhydric alcohol having an IOB of 5 or more. The IOB of the polyhydric alcohol is preferably 5 or more and 9 or less, more preferably 5 or more and 7 or less. IOB (Inorganic / Organic Balance) is a value representing the ratio of the inorganic value (IV) to the organic value (OV) in the organic conceptual diagram, and is an index showing the degree of polarity of an organic compound. In the present invention, the value calculated using the following formula is used as the IOB. IOB value = inorganic value / organic value

[0019] Examples of polyhydric alcohols having an IOB of 5 or higher include glycerin, sorbitol, xylitol, inositol, and mannitol. Among these, glycerin and sorbitol are preferred. These polyhydric alcohols having an IOB of 5 or higher may be used alone or in combination of two or more.

[0020] The content of the polyhydric alcohol with an IOB of 5 or higher is preferably 10% by mass to 60% by mass, more preferably 15% by mass to 55% by mass, and even more preferably 20% by mass to 50% by mass, based on the total amount of the cleanser. If the content of the polyhydric alcohol with an IOB of 5 or higher falls within the above range, foam elasticity and foam durability can be improved.

[0021] ((D) Hydrophobically modified polyether urethane) (D) Hydrophobically modified polyether urethane is a hydrophobically modified polyether urethane represented by the following formula (I): This copolymer is an associative thickener, which is a copolymer having a hydrophilic backbone and hydrophobic moieties at the ends, and which exhibits a thickening effect when the hydrophobic moieties of the copolymer associate with each other in an aqueous medium. In such associative thickeners, the hydrophobic moieties of the copolymer associate with each other in an aqueous medium, causing the hydrophilic moieties to form loops or bridges, thereby exhibiting a thickening effect. By incorporating hydrophobically modified polyether urethane into a cleanser, foam elasticity and foam retention can be improved.

[0022] [ka]

[0023] In the above formula (I), R1, R2 and R4 each independently represent an alkylene group having 2 to 4 carbon atoms or a phenylethylene group, preferably an alkylene group having 2 to 4 carbon atoms. R3 represents an alkylene group having 1 to 10 carbon atoms which may have a urethane bond. R5 represents a linear, branched or secondary alkyl group having 8 to 36 carbon atoms, preferably 12 to 24 carbon atoms. m is a number of 2 or more, preferably 2. h is a number equal to or greater than 1, and is preferably 1. k is a number from 1 to 500, preferably a number from 100 to 300. n is a number from 1 to 200, preferably a number from 10 to 100.

[0024] The hydrophobically modified polyether urethane represented by the above formula (I) can be, for example, R1-[(O-R2) k -OH] m (wherein R1, R2, k, and m are as defined above), and one or more polyether polyols represented by R3-(NCO) h+1 (wherein R3 and h are as defined above) and one or more polyisocyanates represented by HO-(R4-O) n A preferred example is a method of obtaining the polyether monoalcohol by reacting it with one or more polyether monoalcohols represented by -R5 (wherein R4, R5, and n are as defined above).

[0025] In this case, R1 to R5 in formula (I) are selected from the R1-[(O-R2) k -OH] m , R3-(NCO) h+1 , HO-(R4-O) nThe charging ratio of the above three components is not particularly limited, but the ratio of hydroxyl groups derived from the polyether polyol and polyether monoalcohol to isocyanate groups derived from the polyisocyanate is preferably NCO / OH=0.8:1 to 1.4:1.

[0026] The above formula R1-[(O-R2) k -OH] m The polyether polyol compound represented by the formula (I) can be obtained by addition polymerization of an m-valent polyol with an alkylene oxide such as ethylene oxide, propylene oxide, butylene oxide or epichlorohydrin, or styrene oxide.

[0027] Here, the polyol is preferably a dihydric to octahydric one, and examples thereof include dihydric alcohols such as ethylene glycol, propylene glycol, butylene glycol, hexamethylene glycol, and neopentyl glycol; glycerin, trioxyisobutane, 1,2,3-butanetriol, 1,2,3-pentatriol, 2-methyl-1,2,3-propanetriol, 2-methyl-2,3,4-butanetriol, 2-ethyl-1,2,3-butanetriol, 2,3,4-pentanetriol, 2,3,4-hexanetriol, 4-propyl-3,4,5-heptanetriol, 2,4-dimethyl-2,3, Examples of suitable alcohols include trihydric alcohols such as 4-pentanetriol, pentamethylglycerin, pentaglycerin, 1,2,4-butanetriol, 1,2,4-pentanetriol, trimethylolethane, and trimethylolpropane; tetrahydric alcohols such as pentaerythritol, 1,2,3,4-pentanetetrol, 2,3,4,5-hexanetetrol, 1,2,4,5-pentanetetrol, and 1,3,4,5-hexanetetrol; pentahydric alcohols such as adonite, arabitol, and xylitol; hexahydric alcohols such as dipentaerythritol, sorbitol, mannitol, and idit; and octahydric alcohols such as sucrose.

[0028] Furthermore, R2 is determined by the alkylene oxide, styrene oxide, etc. to be added, but alkylene oxides or styrene oxides having 2 to 4 carbon atoms are particularly preferred because they are easily available and can exert excellent effects.

[0029] The alkylene oxide, styrene oxide, etc. to be added may be a homopolymer, a random polymerization of two or more types, or a block polymerization. The addition method may be a conventional method. The degree of polymerization k is 1 to 500. The proportion of ethylene groups in R2 is preferably 50 to 100 mass% of all R2.

[0030] R1-[(O-R2) k -OH] m The molecular weight of the copolymer is preferably 500 to 100,000, and particularly preferably 1,000 to 50,000.

[0031] The above formula R3-(NCO) h+1 The polyisocyanate represented by the formula (I) is not particularly limited as long as it has two or more isocyanate groups in the molecule. Examples thereof include aliphatic diisocyanates, aromatic diisocyanates, alicyclic diisocyanates, biphenyl diisocyanates, and di-, tri-, and tetraisocyanates of phenylmethane.

[0032] Examples of aliphatic diisocyanates include methylene diisocyanate, dimethylene diisocyanate, trimethylene diisocyanate, tetramethylene diisocyanate, pentamethylene diisocyanate, hexamethylene diisocyanate, dipropyl ether diisocyanate, 2,2-dimethylpentane diisocyanate, 3-methoxyhexane diisocyanate, octamethylene diisocyanate, 2,2,4-trimethylpentane diisocyanate, nonamethylene diisocyanate, decamethylene diisocyanate, 3-butoxyhexane diisocyanate, 1,4-butylene glycol dipropyl ether diisocyanate, thiodihexyl diisocyanate, metaxylylene diisocyanate, paraxylylene diisocyanate, and tetramethylxylylene diisocyanate.

[0033] Examples of aromatic diisocyanates include metaphenylene diisocyanate, paraphenylene diisocyanate, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, dimethylbenzene diisocyanate, ethylbenzene diisocyanate, isopropylbenzene diisocyanate, tolidine diisocyanate, 1,4-naphthalene diisocyanate, 1,5-naphthalene diisocyanate, 2,6-naphthalene diisocyanate, and 2,7-naphthalene diisocyanate.

[0034] Examples of the alicyclic diisocyanate include hydrogenated xylylene diisocyanate and isophorone diisocyanate.

[0035] Examples of biphenyl diisocyanates include biphenyl diisocyanate, 3,3'-dimethylbiphenyl diisocyanate, and 3,3'-dimethoxybiphenyl diisocyanate.

[0036] Examples of phenylmethane diisocyanates include diphenylmethane-4,4'-diisocyanate, 2,2'-dimethyldiphenylmethane-4,4'-diisocyanate, diphenyldimethylmethane-4,4'-diisocyanate, 2,5,2',5'-tetramethyldiphenylmethane-4,4'-diisocyanate, cyclohexylbis(4-isocyanthophenyl)methane, and 3,3'-dimethoxydiphenylmethane. benzophenone-4,4'-diisocyanate, 4,4'-dimethoxydiphenylmethane-3,3'-diisocyanate, 4,4'-diethoxydiphenylmethane-3,3'-diisocyanate, 2,2'-dimethyl-5,5'-dimethoxydiphenylmethane-4,4'-diisocyanate, 3,3'-dichlorodiphenyldimethylmethane-4,4'-diisocyanate, and the like.

[0037] Examples of phenylmethane triisocyanates include 1-methylbenzene-2,4,6-triisocyanate, 1,3,5-trimethylbenzene-2,4,6-triisocyanate, 1,3,7-naphthalene triisocyanate, biphenyl-2,4,4'-triisocyanate, diphenylmethane-2,4,4'-triisocyanate, 3-methyldiphenylmethane-4,6,4'-triisocyanate, triphenylmethane-4,4',4''-triisocyanate, 1,6,11-undecane triisocyanate, 1,8-diisocyanate-4-isocyanatemethyloctane, 1,3,6-hexamethylene triisocyanate, bicycloheptane triisocyanate, and tris(isocyanatephenyl)thiophosphate.

[0038] These polyisocyanate compounds may also be used in the form of dimers or trimers (isocyanurate bonds), or may be reacted with amines to be used as biurets.

[0039] Furthermore, polyisocyanates having a urethane bond obtained by reacting these polyisocyanate compounds with polyols can also be used. The polyol is preferably a divalent to octavalent polyol, and the above-mentioned polyols are preferred. In addition, R3-(NCO) h+1 When a trivalent or higher polyisocyanate is used as the hydroxyl group, the polyisocyanate having a urethane bond is preferred.

[0040] The above formula HO-(R4-O) n The polyether monoalcohol represented by -R5 is not particularly limited as long as it is a polyether of a linear, branched, or secondary monohydric alcohol. Such a compound can be obtained by addition polymerization of an alkylene oxide such as ethylene oxide, propylene oxide, butylene oxide, or epichlorohydrin, or styrene oxide, to a linear, branched, or secondary monohydric alcohol.

[0041] The linear alcohol referred to here is represented by the following formula (II). R6-OH (II)

[0042] The branched chain alcohol referred to here is represented by the following formula (III). [ka]

[0043] The secondary alcohol is represented by the following formula (IV). [ka]

[0044] Therefore, R5 is a group obtained by removing the hydroxyl group from the above formulas (II) to (IV). 10 and R 11 is a hydrocarbon group or a fluorocarbon group, such as an alkyl group, an alkenyl group, an alkylaryl group, a cycloalkyl group, or a cycloalkenyl group. Examples of the alkyl group include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tertiary butyl, pentyl, isopentyl, neopentyl, tertiary pentyl, hexyl, heptyl, octyl, 2-ethylhexyl, nonyl, decyl, undecyl, dodecyl, tridecyl, isotridecyl, myristyl, palmityl, stearyl, isostearyl, icosyl, docosyl, tetracosyl, triacontyl, 2-octyldodecyl, 2-dodecylhexadecyl, 2-tetradecyloctadecyl, and monomethyl-branched isostearyl. Examples of alkenyl groups include vinyl, allyl, propenyl, isopropenyl, butenyl, pentenyl, isopentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tetradecenyl, and oleyl. Examples of the alkylaryl group include phenyl, toluyl, xylyl, cumenyl, mesityl, benzyl, phenethyl, styryl, cinnamyl, benzhydryl, trityl, ethylphenyl, propylphenyl, butylphenyl, pentylphenyl, hexylphenyl, heptylphenyl, octylphenyl, nonylphenyl, α-naphthyl, and β-naphthyl groups. Examples of cycloalkyl groups and cycloalkenyl groups include cyclopentyl, cyclohexyl, cycloheptyl, methylcyclopentyl, methylcyclohexyl, methylcycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, methylcyclopentenyl, methylcyclohexenyl, and methylcycloheptenyl groups.

[0045] In the above formula (III), R9 is a hydrocarbon group or a fluorocarbon group, such as an alkylene group, an alkenylene group, an alkylarylene group, a cycloalkylene group, or a cycloalkenylene group.

[0046] R5 is a hydrocarbon group or a fluorocarbon group, preferably an alkyl group, and more preferably has a total of 8 to 36 carbon atoms, particularly preferably 12 to 24 carbon atoms.

[0047] The alkylene oxide, styrene oxide, etc. to be added may be a homopolymer, a random polymerization of two or more kinds, or a block polymerization. The addition method may be a conventional method. The degree of polymerization n is 0 to 1000, preferably 1 to 200, and more preferably 10 to 200. The proportion of ethylene groups in R4 is preferably 50 to 100 mass% of all R4, and more preferably 65 to 100 mass%.

[0048] The copolymer represented by the above formula (I) can be produced by reacting the copolymer at 80 to 90° C. for 1 to 3 hours in the same manner as in the reaction of a normal polyether with an isocyanate.

[0049] Also, R1-[(O-R2) k-OH] m and a polyether polyol (a) represented by R3-(NCO) h+1 When a polyisocyanate (b) represented by the formula (I) is reacted with a polyether monoalcohol (c) represented by the formula (I), a copolymer other than the copolymer of the formula (I) may be produced as a by-product. For example, when a diisocyanate is used, the main product is a cbabc type copolymer represented by the formula (I), but other copolymers such as cbc type and cb-(ab) type are also produced. x Copolymers of the -abc type, etc. may be produced as by-products. In this case, the copolymer of the formula (I) type may be used in the form of a mixture containing the copolymer of the formula (I) type without being particularly separated.

[0050] A particularly preferred example is a hydrophobically modified polyether urethane with the INCI name "(PEG-240 / Decyltetradeceth-20 / HDI) Copolymer (PEG-240 / HDI Copolymer Bisdecyltetradeceth-20 Ether)." This copolymer is commercially available from ADEKA Corporation under the trade name "ADEKA NOL GT-700."

[0051] The content of the hydrophobically modified polyether urethane is preferably 0.1 to 5% by mass, more preferably 0.2 to 2% by mass, based on the total amount of the cleanser. If the content of the hydrophobically modified polyether urethane falls within the above range, foam elasticity and foam durability can be improved.

[0052] ((E) Inorganic Salts) Examples of inorganic salts include sodium chloride, potassium chloride, calcium chloride, sodium sulfate, and sodium lactate. These inorganic salts may be used alone or in combination of two or more. Adding an inorganic salt to a cleanser can improve the manufacturing suitability of the cleanser.

[0053] The content of the inorganic salt is preferably 0.01% by mass to 0.5% by mass, more preferably 0.02% by mass to 0.4% by mass, and even more preferably 0.05% by mass to 0.3% by mass, based on the total amount of the cleanser. If the content of the inorganic salt falls within the above range, foam elasticity and foam durability can be improved.

[0054] ((F) Amphoteric surfactant) The amphoteric surfactant is not particularly limited, but examples thereof include imidazoline-based amphoteric surfactants such as 2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium and 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt; and betaine-based surfactants such as 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkyl betaine, amido betaine, sulfobetaine, and cocamidopropyl betaine. These amphoteric surfactants may be used alone or in combination of two or more. The incorporation of an amphoteric surfactant into a cleanser can improve foam elasticity and foam durability.

[0055] The content of the amphoteric surfactant is preferably 0.1% by mass to 5.0% by mass, more preferably 0.5% by mass to 4.0% by mass, and even more preferably 1.0% by mass to 3.0% by mass, based on the total amount of the cleanser. If the content of the amphoteric surfactant is within the above range, foam elasticity and foam durability can be improved.

[0056] (water) The water is not particularly limited, but water used in cosmetics, quasi-drugs, etc. can be used, such as purified water, ion-exchanged water, tap water, etc.

[0057] The water content can be adjusted appropriately depending on the content of ingredients other than water. For example, the water content is preferably 20% by mass or more and 90% by mass or less, more preferably 20% by mass or more and 80% by mass or less, and even more preferably 30% by mass or more and 70% by mass or less, based on the total amount of the cleanser.

[0058] (Other ingredients) The cleanser according to the present invention can contain, in addition to the above-mentioned ingredients, ingredients commonly used in cleansers, and is produced according to conventional methods. Examples of other ingredients include those listed below. As long as the effects of the present invention are achieved, the cleanser can be produced by further blending one or more of the following ingredients:

[0059] Examples of powder components include inorganic powders (e.g., talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, lepidolite, biotite, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, tungstate metal salts, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, metal soap (e.g., zinc myristate), , calcium palmitate, aluminum stearate), boron nitride, etc.); organic powders (e.g., polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene powder, styrene-acrylic acid copolymer resin powder, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc.); inorganic white pigments (e.g., titanium dioxide, zinc oxide, etc.); inorganic red pigments (e.g., iron oxide (red iron oxide), iron titanate, etc.); inorganic brown pigments (e.g., gamma-iron oxide, etc.); inorganic yellow pigments (e.g., yellow iron oxide, yellow ochre, etc.); inorganic Black pigments (e.g., black iron oxide, low-order titanium oxide, etc.); inorganic purple pigments (e.g., mango violet, cobalt violet, etc.); inorganic green pigments (e.g., chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (e.g., ultramarine, Prussian blue, etc.); pearl pigments (e.g., titanium oxide-coated mica, titanium oxide-coated bismuth oxychloride, titanium oxide-coated talc, colored titanium oxide-coated mica, bismuth oxychloride, fish scale foil, etc.); metal powder pigments (e.g., aluminum powder, copper powder, etc.); zirconium, barium organic pigments such as sodium or aluminum lakes (e.g., organic pigments such as Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 228, Red No. 405, Orange No. 203, Orange No. 204, Yellow No. 205, Yellow No. 401, and Blue No. 404, Red No. 3, Red No. 104, Red No. 106, Red No. 227, Red No. 230, Red No. 401, Red No. 505, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Green No. 3, and Blue No. 1); natural pigments (e.g., chlorophyll, β-carotene, etc.), and the like.

[0060] Examples of liquid oils and fats include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, camellia oil, castor oil, linseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, Chinese tung oil, Japanese tung oil, jojoba oil, germ oil, and triglycerin.

[0061] Examples of solid fats and oils include cacao butter, coconut oil, horse fat, hardened coconut oil, palm oil, beef tallow, mutton tallow, hardened beef tallow, palm kernel oil, lard, beef bone fat, Japan wax kernel oil, hardened oil, beef trotter fat, Japan wax, and hardened castor oil.

[0062] Examples of waxes include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, ivory wax, whale wax, montan wax, rice bran wax, lanolin, kapok wax, lanolin acetate, liquid lanolin, sugarcane wax, lanolin fatty acid isopropyl, hexyl laurate, reduced lanolin, jojoba wax, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, and POE hydrogenated lanolin alcohol ether.

[0063] Synthetic ester oils include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid esters, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, glycerin di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, pentaerythritol tetra-2-ethylhexanoate. Ingredients: Glycerin Tri-2-Ethylhexanoate, Glycerin Trioctanoate, Glycerin Triisopalmitate, Trimethylolpropane Triisostearate, Cetyl 2-Ethylhexanoate, 2-Ethylhexyl Palmitate, Glycerin Trimyristate, Tri-2-Heptylundecanoic Acid Glyceride, Castor Oil Fatty Acid Methyl Ester, Oleyl Oleate, Acetoglyceride, 2-Heptyl Palmitate Examples of suitable glycerin-based copolymers include 2-hexyldecyl lauroyl glutamate, 2-hexyldodecyl lauroyl glutamate, 2-hexyldodecyl lauroyl glutamate, 2-hexylun ...

[0064] Examples of silicone oils include linear polysiloxanes (e.g., dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, etc.); cyclic polysiloxanes (e.g., octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, etc.), silicone resins that form a three-dimensional network structure, silicone rubber, and various modified polysiloxanes (amino-modified polysiloxanes, polyether-modified polysiloxanes, alkyl-modified polysiloxanes, fluorine-modified polysiloxanes, etc.).

[0065] Examples of natural water-soluble polymers include plant-derived polymers (e.g., gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, carrageenan, pectin, agar, quince seed (marmella), algae colloid (cassowia extract), starch (rice, corn, potato, wheat), glycyrrhizic acid); microbial-derived polymers (e.g., xanthan gum, dextran, succinoglucan, pullulan, etc.); and animal-derived polymers (e.g., collagen, casein, albumin, gelatin, etc.).

[0066] Examples of semi-synthetic water-soluble polymers include starch-based polymers (e.g., carboxymethyl starch, methylhydroxypropyl starch, etc.); cellulose-based polymers (methyl cellulose, ethyl cellulose, methylhydroxypropyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, crystalline cellulose, cellulose powder, etc.); and alginic acid-based polymers (e.g., sodium alginate, propylene glycol alginate, etc.).

[0067] Examples of synthetic water-soluble polymers include vinyl polymers (e.g., polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, carboxyvinyl polymer, etc.); polyoxyethylene polymers (e.g., polyoxyethylene-polyoxypropylene copolymers of polyethylene glycol 20,000, 40,000, 60,000, etc.); acrylic polymers (e.g., sodium polyacrylate, polyethyl acrylate, polyacrylamide, etc.); polyethyleneimine; cationic polymers, etc.

[0068] Examples of thickeners include gum arabic, carrageenan, karaya gum, tragacanth gum, carob gum, quince seed, casein, dextrin, gelatin, sodium pectinate, sodium allaginate, methylcellulose, ethylcellulose, CMC, hydroxyethyl cellulose, hydroxypropyl cellulose, PVA, PVM, PVP, sodium polyacrylate, carboxyvinyl polymer, locust bean gum, guar gum, tamarind gum, dialkyldimethylammonium cellulose sulfate, xanthan gum, magnesium aluminum silicate, bentonite, hectorite, magnesium aluminum silicate (Bee Gum), laponite, and anhydrous silicic acid.

[0069] Examples of the ultraviolet absorber include benzoic acid-based ultraviolet absorbers (e.g., para-aminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N,N-dipropoxy PABA ethyl ester, N,N-diethoxy PABA ethyl ester, N,N-dimethyl PABA ethyl ester, N,N-dimethyl PABA butyl ester, N,N-dimethyl PABA ethyl ester, etc.); anthranilic acid-based ultraviolet absorbers (e.g., homomenthyl-N-acetylanthranilate, etc.); salicylic acid-based ultraviolet absorbers (e.g., amyl salicylate, etc.); cinnamic acid-based ultraviolet absorbers (e.g., octyl cinnamate, ethyl 4-isopropyl cinnamate, methyl 2,5-diisopropyl cinnamate, ethyl 2,4-diisopropyl cinnamate, methyl 2,4-diisopropyl cinnamate, propyl p-methoxycinnamate, isopropyl p-methoxycinnamate, isoamyl p-methoxycinnamate, methyl 2,5-diisopropyl cinnamate, ethyl 2,4-diisopropyl cinnamate, propyl p-methoxycinnamate, isopropyl p-methoxycinnamate, isoamyl p-methoxycinnamate, methyl 2,5-diisopropyl cinnamate, ethyl 2,4-diisopropyl cinnamate, methyl ...methyl 2,4-diisopropyl cinnamate, methyl 2,5-diisopropyl cinnamate, methyl 2,4-diisopropyl cinnamate, methyl 2,5-diisopropyl cinnamate, methyl 2,4-diisopropyl cinnamate, methyl 2,5-diisopropyl cinnamate, methyl 2,4-diisopropyl cinnamate, methyl 2,5-diisopropyl cinnamate, methyl 2,4-diisopropyl cinnamate, methyl 2,5-diisopropyl cinnamate, methyl 2,5-diisopropyl cinnamate, methyl 2,5-diiso cyclohexyl-p-methoxycinnamate, octyl-p-methoxycinnamate (2-ethylhexyl-p-methoxycinnamate), 2-ethoxyethyl-p-methoxycinnamate, cyclohexyl-p-methoxycinnamate, ethyl-α-cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glyceryl mono-2-ethylhexanoyl-di-para-methoxycinnamate, etc.; benzophenone-based ultraviolet absorbers (e.g., 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, etc.); non, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2-ethylhexyl-4'-phenyl-benzophenone-2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, 4-hydroxy-3-carboxybenzophenone, etc.);Examples include 3-(4'-methylbenzylidene)-d,l-camphor, 3-benzylidene-d,l-camphor; 2-phenyl-5-methylbenzoxazole; 2,2'-hydroxy-5-methylphenylbenzotriazole; 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole; 2-(2'-hydroxy-5'-methylphenylbenzotriazole; dibenzalazine; dianisoylmethane; 4-methoxy-4'-t-butyldibenzoylmethane; 5-(3,3-dimethyl-2-norbornylidene)-3-pentan-2-one, and the like.

[0070] Examples of sequestering agents include 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, edetate disodium, edetate trisodium, edetate tetrasodium, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, and ethylenediaminehydroxyethyltriacetate trisodium salt.

[0071] Examples of lower alcohols include ethanol, propanol, isopropanol, isobutyl alcohol, and t-butyl alcohol.

[0072] Examples of monosaccharides include trioses (e.g., D-glyceryl aldehyde, dihydroxyacetone, etc.); tetraoses (e.g., D-erythrose, D-erythrulose, D-threose, erythritol, etc.); pentoses (e.g., L-arabinose, D-xylose, L-lyxose, D-arabinose, D-ribose, D-ribulose, D-xylulose, L-xylulose, etc.); hexoses (e.g., D-glucose, D-talose, D-busicose, D-galactose, D-fructose, L-galactose, L- -mannose, D-tagatose, etc.); heptoses (e.g., aldoheptose, heprose, etc.); octooses (e.g., octulose, etc.); deoxysugars (e.g., 2-deoxy-D-ribose, 6-deoxy-L-galactose, 6-deoxy-L-mannose, etc.); aminosugars (e.g., D-glucosamine, D-galactosamine, sialic acid, aminouronic acid, muramic acid, etc.); uronic acids (e.g., D-glucuronic acid, D-mannuronic acid, L-guluronic acid, D-galacturonic acid, L-iduronic acid, etc.), etc.

[0073] Examples of oligosaccharides include sucrose, gunthianose, umbelliferose, lactose, planteose, isolichinoses, α,α-trehalose, raffinose, lychinoses, umbilicin, stachyose, verbascoses, and the like.

[0074] Examples of amino acids include neutral amino acids (e.g., threonine, cysteine, etc.), basic amino acids (e.g., hydroxylysine, etc.), etc. Examples of amino acid derivatives include sodium acyl sarcosine (sodium lauroyl sarcosine), acyl glutamate, sodium acyl β-alanine, glutathione, pyrrolidone carboxylic acid, etc.

[0075] Examples of organic amines include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, and 2-amino-2-methyl-1-propanol.

[0076] Examples of polymer emulsions include acrylic resin emulsion, polyethyl acrylate emulsion, acrylic resin liquid, polyacrylic alkyl ester emulsion, polyvinyl acetate resin emulsion, and natural rubber latex.

[0077] Examples of pH adjusters include buffers such as lactic acid-sodium lactate, citric acid-sodium citrate, succinic acid-sodium succinate, etc. Examples of vitamins include vitamin A, B1, B2, B6, C, E and derivatives thereof, pantothenic acid and derivatives thereof, biotin, etc.

[0078] Examples of antioxidants include tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallic acid esters, sulfites, and hydrogen sulfites. Examples of antioxidant aids include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, and ethylenediaminetetraacetic acid.

[0079] Other ingredients that can be added include, for example, preservatives (ethylparaben, butylparaben, etc.); anti-inflammatory agents (for example, glycyrrhizinic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); whitening agents (for example, placenta extract, saxifrage extract, arbutin, etc.); various extracts (for example, Phellodendron bark, Coptis chinensis, Lithospermum root, Peony, Swertia japonica, Birch, sage, Loquat, Carrot, Aloe, Mallow, Iris, Grape, Job's tears, Luffa, Lily, Saffron, Cnidium rhizome, Angelica acutiloba, Hypericum perforatum, Ononis, Garlic, Chili pepper, Citrus fruit, Angelica acutiloba, Seaweed, etc.), activators agents (e.g., royal jelly, photosensitizers, cholesterol derivatives, etc.); blood circulation promoters (e.g., nonylic acid valenylamide, nicotinic acid benzyl ester, nicotinic acid β-butoxyethyl ester, capsaicin, zingerone, cantharides tincture, ichthammol, tannic acid, α-borneol, tocopherol nicotinate, inositol hexanicotinate, cyclandelate, cinnarizine, tolazoline, acetylcholine, verapamil, cepharanthine, γ-oryzanol, etc.); antiseborrheic agents (e.g., sulfur, thianthol, etc.); anti-inflammatory agents (e.g., tranexamic acid, thiotaurine, hypotaurine, etc.), etc.

[0080] (Pump former container) The pump former container can be a conventionally known pump former container for cleansers. The prepared cleanser of the present invention can be contained in a non-gas-type foam-dispensing container with a porous membrane. The non-gas-type foam-dispensing container can be any known type, as long as it mixes a fixed amount of liquid cleanser with a fixed amount of air and dispenses the foam from the container during use. Specific examples include squeeze foamers, which are used by pressing the body of a soft container with fingers, and pump foamers, which are used by pressing the top of a cap equipped with a pump mechanism with fingers. During use, the liquid cleanser mixed with air in the container is passed through one or more porous membranes, causing the liquid cleanser to be dispensed in foam form from the container's discharge port. Examples of porous membranes for pump former containers include sponges, sintered bodies, and nets. Thin-walled nets are preferred for ease of use. Mesh sizes of approximately 30 to 400 mesh are preferably used.

[0081] (Application) The cleansing agent is preferably provided in the form of a face wash, body soap, hand soap, shampoo, or the like, contained in a pump former container as a cleanser for hair or skin. [Example]

[0082] The present invention will be described in detail based on the following examples, but the present invention is not limited to these examples. Unless otherwise specified, the blend amounts are expressed in parts by mass.

[0083] [Examples 1 to 20, Comparative Examples 1 to 6] <Preparation of cleanser> Cleansers of the examples and comparative examples were prepared according to the formulations shown in Tables 1 to 3. In Tables 1 to 3, the blending ratio of each component is in parts by mass.

[0084] <Evaluation of foam elasticity> Each cleanser was placed in a pump former container. The foam discharged from the pump former container was then measured for viscosity at 30°C using a BL-type viscometer (rotor No. 3, 12 rpm). The evaluation results are shown in Tables 1 to 3. A higher viscosity indicates better foam elasticity, with a rating of "2" or higher being considered a pass and a rating of "1" being considered a fail. (Evaluation criteria) 1: Less than 1700 mPa·s 2: 1700 mPa·s or more and less than 2500 mPa·s 3: 2500 mPa·s or more and less than 3500 mPa·s 4: 3500 mPa·s or more and less than 5000 mPa·s 5:5000mPa·s or more

[0085] <Evaluation of foam durability> (Evaluation method) Each example of cleanser was placed in a pump foamer container. The foam discharged from the pump foamer container was then filled into a 50 ml glass tube. The time until 5 mm of wastewater accumulated at the bottom of the glass tube was then measured and evaluated according to the following criteria. The evaluation results are shown in Tables 1 to 3. A longer time indicates better foam durability, with a rating of "2" or higher being considered a pass and a rating of "1" being considered a fail. (Evaluation criteria) Less than 1:30 minutes 2:30 minutes or more but less than 40 minutes 3: Between 40 and 50 minutes 4: Between 50 and 60 minutes 5:60 minutes or more

[0086] [Table 1]

[0087] [Table 2]

[0088] [Table 3]

[0089] The above results demonstrate that the cleanser according to the present invention has excellent foam elasticity and foam durability. Furthermore, when combined with the results of the comparative examples, it is clear that the cleanser according to the present invention achieves excellent effects by simultaneously blending (A) an N-acylglycine-based anionic surfactant as the anionic surfactant and (B) at least one nonionic surfactant selected from the group consisting of polyoxyethylene glycerin fatty acid esters and polyoxyethylene sorbitan fatty acid esters as the nonionic surfactant with an HLB of 15 or higher. On the other hand, when a glutamic acid-based anionic surfactant is blended in place of an N-acylglycine-based anionic surfactant, foam elasticity and foam durability are found to be impaired.Furthermore, when a nonionic surfactant with an HLB of less than 15 is blended in place of a specific nonionic surfactant with an HLB of 15 or more, foam elasticity and foam durability are found to be impaired.

Claims

1. (A) an N-acylglycine-based anionic surfactant, (B) a nonionic surfactant having an HLB of 15 or more, and (C) Polyhydric alcohol of IOB5 or more Including, the (B) nonionic surfactant having an HLB of 15 or more is at least one selected from the group consisting of PEG-60 glyceryl isostearate, PEG-90 glyceryl isostearate, and PEG-80 sorbitan laurate; A cleanser in which the content of (C) polyhydric alcohol having an IOB of 5 or more is 20% by mass or more and 60% by mass or less.

2. 2. The cleansing agent according to claim 1, wherein the nonionic surfactant (B) having an HLB of 15 or more is at least one selected from the group consisting of PEG-60 glyceryl isostearate and PEG-90 glyceryl isostearate.

3. 3. The cleanser according to claim 1, wherein the content of the component (A) is 1% by mass or more and 20% by mass or less, based on the total amount of the cleanser.

4. The cleanser according to any one of claims 1 to 3, wherein the content of the component (B) is 0.1% by mass or more and 15% by mass or less, based on the total amount of the cleanser.

5. The cleansing agent according to any one of claims 1 to 4, wherein the (C) polyhydric alcohol having an IOB of 5 or more is at least one selected from the group consisting of glycerin and sorbitol.

6. The cleanser according to any one of claims 1 to 5, wherein the content of the component (C) is 20% by mass or more and 50% by mass or less, based on the total amount of the cleanser.

7. The cleansing agent according to any one of claims 1 to 6, further comprising (D) a hydrophobically modified polyether urethane.

8. The cleansing agent according to any one of claims 1 to 7, further comprising (E) an inorganic salt.

9. The cleansing agent according to any one of claims 1 to 8, further comprising (F) an amphoteric surfactant.

10. The cleanser according to any one of claims 1 to 9, which is for use in a pump foamer.

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